Today is your friends birthday. She is y years old. Her brother is 5 years younger.
What is the equation to find y?
y = age of friend's brother + 5
To determine the age of your friend's brother, you first need to know your friend's age, represented as y. According to the information given, her brother is 5 years younger than her.
To find her brother's age, you can subtract 5 from your friend's age: y - 5.
Therefore, your friend's brother is y - 5 years old.
To calculate the age of your friend's brother, you need to subtract 5 from your friend's age.
Age of your friend's brother = age of your friend (y) - 5